Single Crystalline Films of Zinc Oxide for Nanorod Applications

Zinc oxide (ZnO) thin films were deposited by sol–gel spin coating method on to the glass substrate. Effect of post annealing temperature on structural and optical properties has been investigated. The films were characterized by X-Ray diffraction (XRD) and spectrophotometer. Nanocrystalline films having grain size of 90.89 nm has been deduced from X-ray diffraction studies. The single crystalline nature of the films has been confirmed by single mighty peak obtained for (101) orientation. All the films exhibit good transparency more than 90 % in the visible region and average transmittance was found to be decreased with an increase in annealing temperature. The thickness of the films was found to be varying with different post annealing temperature. The post annealing temperature of 300 °C was found to be optimum with reference to the quality and physical parameters of ZnO. Results obtained show the potential applicability of ZnO for nano-rods.